/*
package com.huey.utils.security;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.exceptions.JWTCreationException;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.security.core.userdetails.UserDetails;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

*/
/**
 * @author xubo
 * @date 2022/3/30 17:27
 *//*

@Slf4j
public class JwtTokenUtil {
    private static final Logger LOGGER = LoggerFactory.getLogger(JwtTokenUtil.class);
    private static final String CLAIM_KEY_USERNAME = "sub";
    private static final String CLAIM_KEY_CREATED = "created";
    private String secret;
    private Long expiration;
    private String name;


    */
/**
     * jsonwebtoken
     * jjwt
     * 根据负责生成JWT的token
     *//*

    private String generateToken(Map<String, Object> claims) {
        return Jwts.builder()
                .setClaims(claims)
                .setExpiration(generateExpirationDate())
                .signWith(SignatureAlgorithm.HS512, secret)
                .compact();
    }

    */
/**
     * auth0--生成token
     *  auth0 jwt
     * @param loginDTO 登录信息
     * @return token
     *//*

    public String createToken(LoginDTO loginDTO) {
        try {
            Date date = new Date(System.currentTimeMillis() + 60*60*8*1000);
            //签名算法 秘钥固定 指定哪个系统
            Algorithm algorithm = Algorithm.HMAC256(secret);
            JWTCreator.Builder builder = JWT.create()
                    //签发人 整个大框架的 一般是固定值
                    .withIssuer(name)
                    .withExpiresAt(date)
                    .withClaim("loginDTO", loginDTO.toString());
            return builder.sign(algorithm);
        } catch (IllegalArgumentException | JWTCreationException e) {
            log.error("用户 = [{}], 生成token出现异常", loginDTO, e);
            throw new RuntimeException("生成token异常");
        }
    }

    */
/**
     * 从token中获取JWT中的负载
     *//*

    private Claims getClaimsFromToken(String token) {
        Claims claims = null;
        try {
            claims = Jwts.parser()
                    .setSigningKey(secret)
                    .parseClaimsJws(token)
                    .getBody();
        } catch (Exception e) {
            LOGGER.info("JWT格式验证失败:{}",token);
        }
        return claims;
    }

    */
/**
     * 生成token的过期时间
     *//*

    private Date generateExpirationDate() {
        return new Date(System.currentTimeMillis() + expiration * 1000);
    }

    */
/**
     * 从token中获取登录用户名
     *//*

    public String getUserNameFromToken(String token) {
        String username;
        try {
            Claims claims = getClaimsFromToken(token);
            username =  claims.getSubject();
        } catch (Exception e) {
            username = null;
        }
        return username;
    }

    */
/**
     * 验证token是否还有效
     *
     * @param token       客户端传入的token
     * @param userDetails 从数据库中查询出来的用户信息
     *//*

    public boolean validateToken(String token, UserDetails userDetails) {
        String username = getUserNameFromToken(token);
        return username.equals(userDetails.getUsername()) && !isTokenExpired(token);
    }



    */
/**
     * 从token中获取过期时间
     *//*

    private Date getExpiredDateFromToken(String token) {
        Claims claims = getClaimsFromToken(token);
        return claims.getExpiration();
    }

    */
/**
     * 根据用户信息生成token
     *//*

    public String generateToken(UserDetails userDetails) {
        Map<String, Object> claims = new HashMap<>();
        claims.put(CLAIM_KEY_USERNAME, userDetails.getUsername());
        claims.put(CLAIM_KEY_CREATED, new Date());
        return generateToken(claims);
    }
    */
/**
     * 刷新token
     *//*

    public String refreshToken(String token) {
        Claims claims = getClaimsFromToken(token);
        claims.put(CLAIM_KEY_CREATED, new Date());
        return generateToken(claims);
    }

    */
/**
     * 判断token是否可以被刷新
     *//*

    public boolean canRefresh(String token) {
        return !isTokenExpired(token);
    }

    */
/**
     * 判断token是否已经失效
     *//*

    private boolean isTokenExpired(String token) {
        Date expiredDate = getExpiredDateFromToken(token);
        return expiredDate.before(new Date());
    }

}
*/
